What are the advantages of closed drainage system?

The advantages of a corrugated drain with a closed drainage system are 1) the use of a corru- gated drain ensures maintenance of the drainage portal; 2) nursing staff find drainage bags easy to manage; 3) cross-infection is reduced and au- toinfection of the tracheostomy portal may be prevented; 4) wound inspection is …

Where does sewage go in Chennai?

But not all parts of Chennai are connected to the sewage system. In these areas, the sewage is collected in septic tanks. These tanks are sponsored, built and maintained by individual residents/owners. The waste collected is then transported through sewer tankers to treatment plants.

Where do stormwater drains lead to?

The purpose of these drains is to prevent flooding of streets by quickly transferring rainwater to natural bodies of water, so they lead to watersheds, streams, rivers, lakes, oceans, etc. This means that the pollutants that also go down those drains foul our natural waterways.

What are the impact of drainage sewage?

5.1 Problems caused by poor drainage Household wastewater may also contain pathogens that can pollute groundwater sources, increasing the risk of diseases such as lymphatic filariasis. Poor drainage can lead to flooding, resulting in property loss, and people may even be forced to move to escape floodwaters.

What are the advantages and disadvantages of drainage system?

Drainage System Advantages & Disadvantages

• Advantage: Prevents Water Accumulation.
• Advantage: Reduces Soil Erosion.
• Advantage: Removes Toxic Materials and Disease Organisms.
• Disadvantage: Expensive.
• Disadvantage: Maintenance.
• Disadvantage: Can Contaminate Bodies of Water.

What is the disadvantage of open drains for sewage?

Open drains cause flooding in the area. Flooding itself may displace populations and lead to further health problems. Sometimes when the drain blocks, the sewage enters our compounds to spread diseases. Drinking water that has been contaminated by sewage also causes diseases.

Does Chennai have drainage?

Chennai corporation in its 2016-17 budget allocated ₹415 crores for the drainage system. Between October 2011 and June 2016, the corporation laid around 565 km of new drains. Chennai, as of today, has 2,071 km of stormwater drain network.

What is the difference between a storm drain and a sewer?

A: The sanitary sewer system collects water from inside our homes and businesses and carries it to a treatment plant where the wastewater is cleaned before being released into the Delta. Storm drains are located along streets and in parking lots and flow directly to the Delta without treatment.

How does storm water drainage system work?

How do Storm Drains Work? The storm drainage system helps prevent floods by diverting rainwater into nearby waterways. The water and pollutants flow into storm drains and through underground pipes directly into the nearest stream, pond or water reservoir.

How does sewage affect water quality?

Untreated sewage also destroys aquatic ecosystems, threatening human livelihoods, when the associated biological oxygen demand and nutrient loading deplete oxygen in the water to levels too low to sustain life.

Why is sewage a problem?

Sewage and wastewater contain bacteria, fungi, parasites, and viruses that can cause intestinal, lung, and other infections. Bacteria may cause diarrhea, fever, cramps, and sometimes vomiting, headache, weakness, or loss of appetite. Some bacteria and diseases carried by sewage and wastewater are E.